/* ==========================================================================
   云开体育 · /assets/site.css
   夜间球场指挥中心：深空底 + 面板实色层 + 玻璃浮层的共享外壳与基础组件
   ========================================================================== */

/* ---------- 1. reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; padding: 0; }

ul, ol { list-style: none; }

img, svg, video { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 2. 变量 ---------- */
:root {
  --bg-space: #05070C;
  --bg-panel: #0B111C;
  --glass: #121B2A;
  --text: #F5F7FA;
  --muted: #9FB0C4;
  --orange: #FF6B1A;
  --mint: #2BE3B0;
  --daiqing: #2C4A5E;
  --liuli: #F2C14E;
  --hair: #1A2333;
  --glass-edge: rgba(255, 255, 255, 0.16);

  --r-glass: 18px;
  --r-solid: 6px;
  --u: 8px;
  --shell: 1240px;

  --font-display: 'Oswald', 'Archivo Narrow', 'PingFang SC', 'Source Han Sans SC', 'Noto Sans SC', system-ui, sans-serif;
  --font-body: 'MiSans', 'HarmonyOS Sans SC', 'Source Han Sans SC', 'Noto Sans SC', 'PingFang SC', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基底与中文排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--bg-space);
  background-image:
    radial-gradient(120% 90% at 78% -12%, rgba(44, 74, 94, 0.42), transparent 62%),
    radial-gradient(90% 70% at 8% 6%, rgba(255, 107, 26, 0.10), transparent 58%);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: 0.07em;
}

p { max-width: 68ch; }

/* ---------- 4. 工具类 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(16px, 4vw, 32px);
  padding-right: clamp(16px, 4vw, 32px);
}

.idx {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.muted { color: var(--muted); }
.accent { color: var(--orange); }
.mint { color: var(--mint); }

.skip-link {
  position: fixed;
  top: 8px;
  left: 50%;
  z-index: 200;
  transform: translate(-50%, -180%);
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--orange);
  color: #180A02;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  transition: transform 0.18s var(--ease);
}

.skip-link:focus { transform: translate(-50%, 0); }

/* ---------- 5. 按钮 ---------- */
.btn {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid var(--glass-edge);
  border-radius: 999px;
  background: rgba(18, 27, 42, 0.62);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  overflow: hidden;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.btn::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 0;
  width: 60%;
  background: linear-gradient(90deg, transparent, rgba(255, 107, 26, 0.42), transparent);
  transform: translateX(-170%);
  transition: transform 0.18s linear;
  pointer-events: none;
}

.btn:hover { border-color: rgba(43, 227, 176, 0.45); color: var(--mint); }
.btn:hover::after { transform: translateX(270%); }

.btn-primary {
  background: var(--orange);
  border-color: var(--orange);
  color: #1A0A02;
  font-weight: 600;
}
.btn-primary:hover { background: #FF7E36; border-color: #FF7E36; color: #1A0A02; }

.btn-ghost { background: transparent; border-color: var(--daiqing); color: var(--text); }

.btn-quiet { background: transparent; border-color: transparent; color: var(--muted); padding: 0 12px; }
.btn-quiet:hover { color: var(--mint); border-color: transparent; }

.btn-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }

/* ---------- 6. 页头：悬浮胶囊导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  padding: 14px clamp(12px, 3vw, 26px) 0;
  pointer-events: none;
  transition: padding-top 0.24s var(--ease);
}

.site-header[data-condensed="true"] { padding-top: 8px; }

.header-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 95;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--orange), var(--liuli));
  pointer-events: none;
}

.header-inner {
  position: relative;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(8px, 1.6vw, 20px);
  pointer-events: none;
}

.header-inner > * { pointer-events: auto; }

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  color: var(--text);
}

.brand-island {
  justify-content: center;
  min-height: 52px;
  padding: 8px 20px;
  border: 1px solid var(--glass-edge);
  border-radius: 999px;
  background: rgba(18, 27, 42, 0.66);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  backdrop-filter: blur(14px) saturate(120%);
  transition: background-color 0.24s var(--ease), border-color 0.24s var(--ease),
              min-height 0.24s var(--ease), padding 0.24s var(--ease);
}

.brand-island:hover { border-color: rgba(43, 227, 176, 0.45); }

.brand-mark {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: 0.2em;
  color: var(--text);
  white-space: nowrap;
  transition: color 0.18s var(--ease);
}

.brand:hover .brand-mark { color: var(--mint); }

.brand-short {
  display: none;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--text);
  white-space: nowrap;
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  line-height: 1.2;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
}

.nav-island {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border: 1px solid var(--glass-edge);
  border-radius: 999px;
  background: rgba(18, 27, 42, 0.62);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  backdrop-filter: blur(14px) saturate(120%);
  transition: background-color 0.24s var(--ease), padding 0.24s var(--ease);
}

.nav-list { display: flex; align-items: center; gap: 2px; }

.nav-item { display: flex; min-width: 0; }

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.nav-link:hover { color: var(--mint); }

.nav-link[aria-current="page"] {
  color: var(--text);
  background: rgba(255, 107, 26, 0.14);
  box-shadow: inset 0 0 0 1px rgba(255, 107, 26, 0.42);
}

.nav-link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 50%;
  width: 4px;
  height: 4px;
  margin-top: -2px;
  border-radius: 50%;
  background: var(--orange);
}

.nav-utility {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 4px;
  padding: 0 8px 0 12px;
  border-left: 1px solid var(--hair);
}

.nav-utility-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.nav-utility-list { display: flex; align-items: center; gap: 2px; }

.nav-utility-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 10px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  transition: color 0.18s var(--ease);
}

.nav-utility-link:hover { color: var(--mint); }

.header-actions { display: flex; align-items: center; gap: 8px; }

.header-cta { white-space: nowrap; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--glass-edge);
  border-radius: 999px;
  background: rgba(18, 27, 42, 0.66);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.nav-toggle-bars { display: inline-flex; flex-direction: column; gap: 4px; width: 16px; }

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* 收缩态 */
.site-header[data-condensed="true"] .brand-island { min-height: 44px; padding: 4px 16px; }
.site-header[data-condensed="true"] .brand-mark { display: none; }
.site-header[data-condensed="true"] .brand-short { display: inline; }
.site-header[data-condensed="true"] .brand-tag { display: none; }
.site-header[data-condensed="true"] .nav-island { padding: 4px 6px; background: rgba(11, 17, 28, 0.84); }
.site-header[data-condensed="true"] .nav-link { padding: 0 12px; font-size: 13.5px; }
.site-header[data-condensed="true"] .nav-utility { display: none; }

@media (max-width: 1080px) {
  .nav-utility { display: none; }
  .nav-link { padding: 0 10px; font-size: 13.5px; }
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  border-top: 1px solid var(--hair);
  background: var(--bg-space);
  color: var(--muted);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 12px;
  background-image: repeating-linear-gradient(90deg, var(--hair) 0 1px, transparent 1px 28px);
  pointer-events: none;
}

.site-footer::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(70% 60% at 62% 0%, rgba(44, 74, 94, 0.35), transparent 70%);
  pointer-events: none;
}

.site-footer > .shell { position: relative; z-index: 1; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
  padding: clamp(40px, 6vw, 72px) 0 clamp(24px, 3vw, 36px);
}

.footer-brand { display: flex; flex-direction: column; gap: 10px; }

.footer-tagline {
  max-width: 26ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.footer-icp { font-size: 12px; color: var(--muted); }

.footer-col { display: flex; flex-direction: column; gap: 12px; }

.footer-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text);
}

.footer-list { display: flex; flex-direction: column; gap: 2px; }

.footer-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  color: var(--muted);
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.footer-link:hover { color: var(--mint); transform: translateX(2px); }

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border: 1px solid var(--hair);
  border-radius: var(--r-glass);
  background: rgba(18, 27, 42, 0.5);
}

.footer-contact-line {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  word-break: break-word;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 0 32px;
  border-top: 1px solid var(--hair);
}

.footer-copy { font-size: 12.5px; color: var(--muted); }

.footer-mini { display: flex; flex-wrap: wrap; gap: 0 16px; }
.footer-mini .footer-link { font-size: 12.5px; }

/* ---------- 8. 正文容器与页面结构 ---------- */
.page-main {
  display: block;
  padding-top: clamp(104px, 12vw, 142px);
  padding-bottom: clamp(32px, 5vw, 56px);
}

.breadcrumb { margin-bottom: 22px; }

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.breadcrumb-item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb-item[aria-current="page"] { color: var(--text); }

.breadcrumb-link { color: var(--muted); transition: color 0.18s var(--ease); }
.breadcrumb-link:hover { color: var(--mint); }

.breadcrumb-sep { color: var(--daiqing); }

.ticked::before,
.ticked::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border-style: solid;
  border-color: var(--daiqing);
  border-width: 0;
  pointer-events: none;
}

.ticked::before { top: -1px; left: -1px; border-top-width: 1px; border-left-width: 1px; }
.ticked::after { bottom: -1px; right: -1px; border-bottom-width: 1px; border-right-width: 1px; }

.page-head {
  position: relative;
  padding: clamp(28px, 5vw, 56px) clamp(18px, 3.4vw, 44px);
  border: 1px solid var(--hair);
  border-radius: var(--r-glass);
  background: linear-gradient(150deg, rgba(11, 17, 28, 0.92), rgba(5, 7, 12, 0.6));
  overflow: hidden;
}

.page-head::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 10px;
  background-image: repeating-linear-gradient(90deg, var(--hair) 0 1px, transparent 1px 40px);
  pointer-events: none;
}

.page-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--orange);
}

.page-title {
  margin-top: 14px;
  font-size: clamp(2.1rem, 5.6vw, 4.4rem);
  font-weight: 250;
  line-height: 1;
  letter-spacing: 0.08em;
}

.page-lede {
  margin-top: 16px;
  max-width: 64ch;
  color: var(--muted);
  font-size: 16px;
}

.section { padding: clamp(36px, 6vw, 76px) 0; }

.section-head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--hair);
}

.section-head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 64px;
  height: 2px;
  background: var(--orange);
}

.section-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.section-title {
  font-size: clamp(1.5rem, 3.4vw, 2.6rem);
  font-weight: 250;
  letter-spacing: 0.08em;
}

.section-note {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* ---------- 9. Bento 栅格 ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--u);
  align-items: start;
}

.bento > * { grid-column: span 12; min-width: 0; }

@media (min-width: 720px) {
  .b-3 { grid-column: span 6; }
  .b-4 { grid-column: span 6; }
  .b-5 { grid-column: span 6; }
  .b-6 { grid-column: span 6; }
  .b-7 { grid-column: span 12; }
  .b-8 { grid-column: span 12; }
  .b-9 { grid-column: span 12; }
  .b-12 { grid-column: span 12; }
}

@media (min-width: 1080px) {
  .b-3 { grid-column: span 3; }
  .b-4 { grid-column: span 4; }
  .b-5 { grid-column: span 5; }
  .b-6 { grid-column: span 6; }
  .b-7 { grid-column: span 7; }
  .b-8 { grid-column: span 8; }
  .b-9 { grid-column: span 9; }
  .b-12 { grid-column: span 12; }

  .drop-1 { margin-top: 24px; }
  .drop-2 { margin-top: 48px; }
  .drop-3 { margin-top: 64px; }
}

/* ---------- 10. 面板 ---------- */
.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--hair);
  border-radius: var(--r-solid);
  background: var(--bg-panel);
}

.panel-glass {
  border: 1px solid var(--glass-edge);
  border-radius: var(--r-glass);
  background: rgba(18, 27, 42, 0.6);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  backdrop-filter: blur(14px) saturate(120%);
}

.panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.panel-title {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--text);
}

.panel-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  white-space: nowrap;
}

.panel-body { color: var(--muted); font-size: 15px; }

.panel-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--hair);
}

/* ---------- 11. 数据块与徽标 ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1px;
  background: var(--hair);
  border-radius: var(--r-solid);
  overflow: hidden;
}

.stat { background: var(--bg-panel); padding: 16px; }

.stat-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1;
  color: var(--text);
}

.stat-label {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--hair);
  border-radius: 999px;
  background: rgba(18, 27, 42, 0.5);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.tag-version { border-color: rgba(242, 193, 78, 0.45); color: var(--liuli); }

.tag-live { border-color: rgba(43, 227, 176, 0.45); color: var(--mint); }

.tag-live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 3px rgba(43, 227, 176, 0.16);
}

/* ---------- 12. 时间轴 ---------- */
.timeline {
  position: relative;
  padding-left: 26px;
  border-left: 1px solid var(--daiqing);
}

.timeline-item {
  position: relative;
  padding-bottom: clamp(20px, 3vw, 32px);
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-item::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 6px;
  width: 11px;
  height: 11px;
  border: 1px solid var(--daiqing);
  border-radius: 50%;
  background: var(--bg-space);
}

.timeline-item[data-state="active"]::before {
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 26, 0.16);
}

.timeline-time {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.timeline-title {
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--text);
}

.timeline-text {
  margin-top: 6px;
  max-width: 60ch;
  font-size: 14.5px;
  color: var(--muted);
}

/* ---------- 13. 图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--hair);
  border-radius: var(--r-solid);
  background: linear-gradient(160deg, #0E1520, var(--bg-space));
}

.media-frame img,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(5, 7, 12, 0.72));
  pointer-events: none;
}

.media-21x9 { aspect-ratio: 21 / 9; }
.media-16x9 { aspect-ratio: 16 / 9; }
.media-4x5 { aspect-ratio: 4 / 5; }
.media-1x1 { aspect-ratio: 1 / 1; }

.media-caption {
  position: absolute;
  left: 12px;
  bottom: 10px;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text);
}

/* ---------- 14. 横向刻度面板 ---------- */
.scroller { position: relative; }

.scroller-track {
  display: flex;
  gap: var(--u);
  overflow-x: auto;
  padding-bottom: 14px;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--daiqing) transparent;
}

.scroller-track::-webkit-scrollbar { height: 6px; }
.scroller-track::-webkit-scrollbar-track { background: var(--hair); border-radius: 999px; }
.scroller-track::-webkit-scrollbar-thumb { background: var(--daiqing); border-radius: 999px; }
.scroller-track:focus-visible { outline: 2px solid var(--orange); outline-offset: 4px; }

.scroller-item {
  flex: 0 0 clamp(240px, 72vw, 340px);
  scroll-snap-align: start;
}

.scroll-rail {
  height: 2px;
  background-image: repeating-linear-gradient(90deg, var(--hair) 0 1px, transparent 1px 12px);
}

/* ---------- 15. 筛选胶囊 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--glass-edge);
  border-radius: 999px;
  background: rgba(18, 27, 42, 0.5);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.chip:hover { color: var(--mint); border-color: rgba(43, 227, 176, 0.4); }

.chip[aria-pressed="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: #180A02;
}

[data-filter-item][hidden] { display: none; }

/* ---------- 16. 可展开索引 ---------- */
.index-fold {
  overflow: hidden;
  border: 1px solid var(--hair);
  border-radius: var(--r-solid);
  background: rgba(11, 17, 28, 0.6);
}

.index-fold + .index-fold { margin-top: 8px; }

.index-fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 56px;
  padding: 0 18px;
  list-style: none;
  cursor: pointer;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
}

.index-fold summary::-webkit-details-marker { display: none; }

.index-fold summary::after {
  content: "＋";
  font-family: var(--font-mono);
  color: var(--muted);
}

.index-fold[open] summary::after { content: "－"; color: var(--orange); }

.index-list { padding: 0 18px 16px; }

.index-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  border-top: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
}

.index-key { color: var(--muted); }
.index-val { color: var(--text); text-align: right; }

/* ---------- 17. 等宽数据表 ---------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
}

.data-table th,
.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--hair);
  text-align: left;
}

.data-table th {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.data-table tbody tr:hover { background: rgba(18, 27, 42, 0.5); }

.data-table .up { color: var(--mint); }
.data-table .down { color: var(--orange); }

/* ---------- 18. 滚动显现 ---------- */
[data-reveal] { opacity: 1; }

.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}

.has-js [data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 19. 响应式：页头 / 页脚 ---------- */
@media (max-width: 980px) {
  .site-header { padding-top: 10px; }
  .site-header[data-condensed="true"] { padding-top: 8px; }
  .header-inner { gap: 10px; }
  .brand-tag { display: none; }

  .nav-island { max-width: 100%; overflow-x: auto; }

  .has-js .nav-toggle { display: inline-flex; }

  .has-js .nav-island {
    position: fixed;
    top: 78px;
    left: clamp(12px, 3vw, 26px);
    right: clamp(12px, 3vw, 26px);
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    max-height: calc(100vh - 110px);
    overflow-y: auto;
    padding: 14px;
    border-radius: var(--r-glass);
    background: rgba(11, 17, 28, 0.95);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.24s var(--ease), transform 0.24s var(--ease), visibility 0.24s var(--ease);
  }

  .has-js .nav-island[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .has-js .nav-list { flex-direction: column; align-items: stretch; gap: 2px; }
  .has-js .nav-item { display: block; }

  .has-js .nav-link {
    min-height: 48px;
    padding: 0 16px;
    border-radius: 12px;
    font-size: 15px;
    letter-spacing: 0.08em;
  }

  .has-js .nav-link[aria-current="page"] { border-radius: 12px; }

  .has-js .nav-utility {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    margin: 6px 0 0;
    padding: 10px 4px 0;
    border-left: 0;
    border-top: 1px solid var(--hair);
  }

  .has-js .nav-utility-list { flex-direction: column; align-items: stretch; gap: 0; }
  .has-js .nav-utility-link { min-height: 44px; padding: 0 12px; }

  .site-header[data-condensed="true"] .nav-link { padding: 0 16px; font-size: 15px; }
}

@media (max-width: 760px) {
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 20px;
  }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  .page-head { border-radius: var(--r-solid); }
  .footer-base { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .nav-toggle { padding: 0 14px; }
  .nav-toggle-label { display: none; }
  .brand-island { padding: 6px 14px; }
  .header-cta { padding: 0 14px; font-size: 12.5px; letter-spacing: 0.02em; }
  .media-21x9 { aspect-ratio: 16 / 9; }
}

/* ---------- 20. reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .has-js [data-reveal] { opacity: 1 !important; transform: none !important; }
  .btn::after { display: none; }
  .footer-link:hover { transform: none; }
}